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AIWerk

mcp-server-smallinvoice

by AIWerk

get_service_category

Read-only

Return data of a service category by its ID. Optionally include specific fields using a comma-separated list.

Instructions

Returns data of specified service category

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
category_idYescategory ID
withNoComma separated, optional keys that should be included in the response.
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and destructiveHint=false, which cover the behavioral safety profile. The description adds no further context about auth requirements, rate limits, or potential side effects, adding minimal extra value.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence with no unnecessary words. It is front-loaded with the action and resource, and every word earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool is a simple retrieval with two parameters, and annotations cover safety. No output schema exists, but the description is sufficient for an agent to understand what the tool does. Could be slightly improved by noting that it returns a single service category object.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the input schema fully describes both parameters (category_id and with). The description does not add any additional meaning beyond what the schema provides, so baseline score of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Returns data of specified service category' clearly states the verb 'returns' and the resource 'data of specified service category'. It distinguishes from sibling get_* tools by specifying the resource type, but does not explicitly differentiate from them.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives (e.g., list_service_categories). There is no mention of prerequisites, exclusions, or context for usage.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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